Precision Timing Gear for Engines
High-precision timing gear for synchronizing camshaft and crankshaft in internal combustion engines. HTS 8483.90.80 as separate 'Other' transmission toothed wheel. Features involute profile for minimal backlash.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If integral to spark-ignition engine use
Dedicated engine parts provisions in 8409 supersede general transmission parts.
If explicitly a chain sprocket for timing
Timing chain sprockets have specific statistical breakout.
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Import Tips & Compliance
• Provide timing chain compatibility data to avoid sprocket misclassification
• Engine-specific markings help distinguish from general industrial gears
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